Add, delete, restore, or specify a default library. 
 Add, Delete, or Restore Library 
-  On the Get Started tab  Launch panel, click Projects. Launch panel, click Projects.
- Select a project in the Project Editor. 
- To confirm the libraries that are in the project, expand the Material Libraries node. 
- Right-click the Material Libraries node and do one of the following: - Click Add Library and navigate to a library. 
- Click Remove Library. 
- Click Restore System Default. 
 
5. Click OK. 
Note: To make an added library active, right-click the Library node and select Active Library. 
 Specify Default Library 
 The default active library initially populates all library access controls and lists. 
-  On the ribbon, click Get Started tab  Launch panel Launch panel Projects. The Project editor displays. Projects. The Project editor displays.
- In the projects list, select the project for which to set the default system libraries. 
- Expand the Material Libraries and Appearance Libraries top nodes. 
- Right-click the library you want to designate as the default, and click Active Library. 
- Click Save, and then click Done.